Eaton MDL3300Y - 300 A, 600 V, 3-Pole Circuit Breaker | AmpState

Eaton MDL3300Y is a 300 A, 600 V, 3-pole molded case circuit breaker designed to guard branch circuits against overcurrent and short circuits in panelboards and loadcenters. Its compact molded-case design frees panel space, while a thermal-magnetic trip unit delivers stable, repeatable protection across a wide range of operating conditions. Engineered to integrate with Eaton's OEM loadcenters and panelboards, the MDL3300Y is a dependable choice for residential, commercial, and light industrial installations.

Key Features and Benefits

• Compact molded-case design to maximize panel space and simplify installation
• Thermal-magnetic trip unit for stable, repeatable protection across temperature and load variations
• 3-pole configuration suitable for three-phase circuits and multi-pole protection
• 600 V rating broadens applicability in commercial and light industrial environments
• 300 A current rating supports higher-capacity branch circuits
• Seamless compatibility with matching Eaton OEM loadcenters and panelboards
• Suitable for residential, commercial, and light industrial applications

Practical Use Scenarios

• Main protection for service panels in small to mid-size commercial spaces
• Branch circuit protection for heavy-duty lighting and motor loads
• Retrofit or replacement within an Eaton panel ecosystem to maintain consistent protection characteristics

Technical Snapshot

• Manufacturer: Eaton
• Part Number: MDL3300Y
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 300 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Installation & Compatibility

Designed to snap into matching OEM loadcenters and panelboards, the MDL3300Y ensures a cohesive protection solution within your Eaton ecosystem. For best results, pair with other Eaton devices to maintain coordinated protection and consistent trip characteristics across the system.

Why Choose the MDL3300Y for Your Eaton Panel

This molded case breaker combines a space-efficient footprint with the reliability of a thermal-magnetic trip unit, delivering dependable protection for demanding circuits without complicating panel layouts. Choosing the MDL3300Y supports a streamlined service experience, straightforward replacements, and a unified protection strategy across compatible Eaton panelboards and loadcenters.

Invest in robust, scalable protection for your electrical system with the Eaton MDL3300Y 300 A, 600 V, 3-pole molded case circuit breaker.